Foot-operated elevator.



R.LABORDA. FOOT OPERATED ELEVATOR.

.PPLIOATION FILED JULY 11,1913.

2 SHEETS-SHEET 1.

Patented July 21, 1914.

rHs NaRRls PETERS o, musmuamn, v. c.

R. LABORDA.

FOOT OPERATED ELEVATOR.

APPLICATION FILED JULY 11, 1913.

Patented July 21, 1914 I: ll

Wmmm 4 9 the descent-of the car. Fig. 5 is a sectional UNITED sra'rns rar' RICHARD LABORDA, OF SAN FRANCISCO, CALIFORNIA.

FOOT-OPERATED ELEVATOR.

To all whom it may concern:

Be it known that I, RICHARD LABORDA, a subject of the King of Spain, and a resident of the city and county of San Francisco and the State of California, have invented certain new and useful Improvements in Improved F oot-Operated Elevators, of which the following is a specification.

My invention relates to foot operated elevators wherein the car is provided with a spring actuated drum that is adapted to elevate the said car by means of a stationary suspended cable wound thereon, the upper end of the said cable being rigidly secured to the top 'ofthe frame work which serves as a guide for the car, and wherein stirrups slidably mounted within the car, are adapted'to control theoperation of the spring actuated drum and the object of my invention is, to provide improved means for elevating an elevator car.

For a clear comprehension of the device reference should be had to the drawings forming a part of the present specifications wherein like numerals of reference designate similar parts throughout the said specifications and drawings and in which Figure 1 is a front broken elevation of the device, disclosing the spring actuated drum, the controlling sprockets and the idler sheave rotatably mounted on the car, and the foot pedals slidably mounted on the said car, the manner in which the cables are secured tothe stirrups and sprockets, and the manner in which the lifting cable is secured to the spring actuated drum and the idler sheave. Fig. 2 is a vertical sectional view taken on line XX of Fig. 1 looking in the direction indicated by the arrow. Fig. ,3 is an enlarged side elevation of the sprockets and the idler sheave disclosing the manner in which the said sprockets automatically engage the said sheave and the means for releasing both sprockets from the said sheave for the purpose of lowering the car. Fig. 4 is a vertical sectional view of the spring actuated drum and the governor secured thereto for the purpose of controlling view of the spring actuated drum disclosing the c'oiledspring secured thereto and the shaft upon which the said drum is mounted. Fig. 6 is a side elevation of the governor and Fig. 7 is. a plan view in section of a Specification of Letters Patent.

Application filed July 11, 1913. Serial No. 779,635.

Patented July 21, 1914.

and 4 are slidv 6. Rotatably mounted upon the said shaft 6 are the sprockets"? and 8 which are provided with the clutches 9 and t-ively, said clutches 9 and 10 being adapted to engage similar clutches 11 and 12 which are integral with the idler sheave 14. Coiled springs 15 and 16 are coiled about the shaft 6and'are interposed between the sprockets" 7 and '8 and the outer bearings ofthe said shaft. Pivotally secured to the bars 5 are levers 17 and 18 which are adapted to engage the hubs of the sprockets 7 and 8, re-'.

spectively, for thepurpose of disengaging the said sprockets from the idlerv sheave 14 and moving the same against the tension of the springs 15 and 16, thepurpose of which will hereinafter be more fully described. Cords 19 and 20 connect the lower ends of the levers 17 and 18, respectively, and are in turn connected to a central cord 21 so that when the said cord 21 is pulled downward the ends of the said levers 17 and'18 will be moved toward each other and release the sprockets 7 and 8 from the sheave 14.

A stationary suspended cable 22 is secured to the upper portion of the frame 1 and after passing over a guide pulley 23, rotatably mounted within the standards 24 of ornrcn.

10, respec- 6.0 car 2 slidably the car 2, and making a double turn around the sheave 14 is wound around a spring actuated drum 27 which is rotatably mounted upon a fixed shaft 29 secured to suitablev supports 28 on the car ,2. A coiled spring S has one end secured to the fixed shaft 29 the other end thereof being secured to the internal surface of the drum 27. Pins 30 are rigidly secured to one side of the drum.

; O the outer ends of the pins 30 are pivotally secured the band brakes 32 which are adapted to be engaged by the weighted levers 33 which are also pivotally secured to 3 the pins 30 and adapted to engage the brakebands- 32 and press the same against the brake drum 31 rigidly secured to the fixed j shaft 29 for the'purpose' of controlling the speed of the drum 27. A suitable housing 34 is provided for the governing mechanism and rotates therewith.

A cable is secured to the bottom of the pedals 3 and 4 and passes over a pulley 36 rotatably secured to the bottom of the car 2.

A continuousconnection 37, having chain portions 37 which are adapted to engage the sprockets 7 to the top of the stirrup 3 and, after passing over the sprocket 7, idler pulley 88 and the sprocket 8, has the other end thereof secured'to the top of the stirrup 4.

An idler 39 is secured to the top of the car 2 and directly over stirrup 3 and engages the connection 37 so that the connection 37 between the said idler 39 and the stirrup 3 will alwaysbe vertical while the said stirrup 8 is moving up or down. A suitable bolt 40 is slidably mounted in the car 2 and is adapted to engage apertures, not shown, in the vertical portion of the frame 1 "for the purpose of retaining the car 2 in several positions.

The operation of the car is as follows: Thetension of the spring is within the drum 27 is sufficient to raise the car 2 and the stirrups 3 and 4 therein when no weight is on the said stirrups or car. The tension of the springs rotates the drum 27 and winds up the cable22 thereby elevating the said car 2 to which the said drum 27 is rotatably secured. As the car 2 ascends the stationary cable 22 rotates the drum 14 around which the said cable '22 -makes a double turn. When the feet of the operator are placed in the stirrups 3 and 4 his weight is supported by the idler 38 and the connection 37 which engages the said idler 38 and supports the stirrups 3 and 4 to which the said connection is secured. When the weight of the operator is removed from the stirrup "'3 and placed on the stirrup 4 the following operation takes place. The tension of the spring S secured to the drum '27 will rota-te the said drum and wind up the cable 22 which will elevate the car 2 and cause the sheave 14, secured to the top thereof, to "be rotated by means'oi'that portion of the stationary cable 22 which engages it. The weight of the operator or the stirrup 4 will be supported by the chain portion 87 of the connection 37,, which engages the sprocket 8, in the following manner: The tension of the spring 16 coiled about the shaft '6 will cause the clutch "10 of the sprocket 8 to engage the clutch 120i the sheave 14. As the sheave 14 rotates during the upward movement of "the car 2 the sprocket 8, to which the said clutch '12 of the sheave 14 is connected, rotates therewith and such rotation is assisted by the weight of the operator on the stirrup 4. From this it is'apparent that the weight of the operator 'on the stirrup 4 will assist and. 8, has one end secured the elevation of the car '2 and the stirrup 3 from which the weight of the operator has been removed. As the car moves up ward the stirrup 4 will remain stationary relatively .to the frame 1 and the stirrup 3 will be elevated by that end of the connection 37 to which it is secured inasmuch as that end must move upward when the end to which the stirrup 4 is secured is stationary and the car is moving ,upward.

When the bottom of the car 2 reaches the stirrup 4 the weight of the operator is transferred to the stirrup 3 which causes the chain portion 37' of the connection 37 to move the sprocket 7 in a direction that will permit the spring 15 to force the clutch 9 of .the sprocket 7 into engagement with the clutch 11 of the sheave 14. The tension of the spring S of the drum 27 assisted by the weight of the operator or the stirrup 3, will again elevate the car 2 and thestirrup 4, by rotating the sheave 14 and causing the same to ascend the stationary cable 22. Simultaneously, the stirrup '4 will be elevated by the connection 37.

When the car 2 has attained the desired elevation it may be retained in that position by maintaining the weight of the operator on either stirrup until thecar 2 reaches the bottom of the lowermost stirrup which will prevent the further elevation of the said car inasmuch as the tension of the spring S is not-su'liicient to raise the weight of'the operator. 4

"When it is desired to cause the car to descend the same is accomplished by pulling downward on the cord 21 which will cause the levers 17 and 1 8't0 release both sprockets 7 and 8 from the sheave 14. The governor hereinbe'fore described will control the descent of the car.

It is obvious from the foregoing that I have provided improved means for elevating the car.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is- 1. A foot operated elevator comprising a suitable car; a. stationary suspension cable; a suitable sheave rotatably mounted on the top of the car and adapted to engage the stationary cable; a spring actuated drum rotatably mounted on the car and adapted to elevate the said car by winding the lower end ofthe stationary cable thereonystirrups slidably mounted within the car; and means operatively connecting thestirrups with the sheave rotatably mounted upon the top of the car for the purpose of controlling the elevation of the said car 'by the spring actuated drum.

2. 'A 'toot operated elevator comprising suitable car; a "spring actuated drum rotatably mounted 'within the car; a sheave rotata'bly "mounted within the car and above the spring actuated drum; stirrups slidably mounted within the car; a stationary suspension cable adapted to engage the periphcry of the sheave and having its lower end wound around the spring actuated drum; sprockets rotatably mounted on either side of the sheave and adapted to rotate in opposite directions and to engage the said sheave when turning in one direction only; and suitable connections between the stirrups and the sprockets and adapted to rotate the said sprockets in opposite directions from each other so that one of the said sprockets will always be in engagement with the sheave when it is continuously ro-' tating in one direction, for the purpose of controlling the elevation of the car by the spring actuated drum and suspension cable.

3. A foot operated elevator comprising a suitable car; a spring actuated drum rotatably mounted within the car; a shaft rotatably mounted on the topof the car and above the spring actuated drum; a sheave rigidly secured to the approximate center of the shaft and having clutch members on either side thereof; sprockets rotatably mounted upon the shaft and on either side of the sheave and having clutches adapted to engage the clutches on the sheave when turning in one direction only; a stationary suspension cable adapted to engage the periphery of the sheave and having its lower end wound around the spring actuated drum; stirrups slidably mounted within the car; suitable connections between the tops of the stirrups and adapted to engage the [sprockets and rotate the same in opposite of the sheave and to directions by pulling downward on one stirrup; means adapted to cause the clutches of either sprocket to engage the clutch on that side of the sheave when turning in the same direction therewith; and means for releasing both sprockets from the sheave.

4. A foot operated elevator comprising a suitable car; a sheave rotatably mounted on the top of the car; a stationary suspension cable adapted to engagethe periphery rotate the same; a spring actuated drum rotatably mounted within the frame and adapted to engage the lower end of the cable below the sheave and to wind the said cable around the said drum for the purpose of elevating the car; stirrups slidably mounted within the car; sprockets rotatably mounted on the top of the car and coaxial with the sheave and. adapted to engage the sheave when rotating in the same springs adapted to retain the sprockets against the sheave; suitable connections between the tops of the stirrups and adapted to rotate the sprockets in opposite directions; means for releasing both sprockets from the sheave; and means for controlling the descent of the car when both sprockets are released from the sheave.

direction therewith; suitable 5. A foot operated elevator comprising a suitable car; a sheave rotatably mounted upon the top of the car; a stationary suspension cable adapted to engage the periphery of the sheave and rotate the same; a spring actuated drum rotatably mounted within the car below the sheave and adapted to engage the lower end of the suspension cable and to wind the said cable around the said drum for the purpose of elevating the car; stirrups slidably mounted within the car; sprockets rotatably mounted on the car coaxial with the sheave and adapted to engage the sheave when rotating in the same direction therewith; suitable springs adapted to retain either sprocket in connectlon with the sheave when rotating therewith; suitable connections between the tops of the stirrups and having chain portions adapted to engage the sprockets and to rotate the said sprockets in opposite directions when one of the stirrups is pulled downward; levers adapted to disengage both sprockets from the sheave; and a suitable governor secured to the spring actuated drum and adapted to control the descent of the car when both sprockets are released from the sheave.

In witness whereof I hereunto nature in the witnesses.

set my sigpresence of two subscribing RICHARD LAB ORDA.

Witnesses:

RAYMOND LABORDA, JAMES F. MoGUE.

Copies of thin patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. 0. 

